<form action="/borrow/" method="post">
    <label><span>学生学号:</span></label>
    <input type="text" name="studentid" style="width: 120px">
    <label><span>图书索书号:</span></label>
    <input type="text" name="bookid" style="width: 120px">
    <label><span>借还状态:</span></label>
    <!--<input type="text" name="back" style="width: 120px">-->
    <select name="back" style="width: 150px">
        <option value="">请选择借还状态</option>
        <option value="0">已借</option>
        <option value="1">已还</option>
    </select>
    <input type="submit" value="查询">
</form>